Laser cutting device

Abstract

An exemplary laser cutting device ( 300 ) includes a laser source ( 40 ), a lens module ( 51 ), a sprayer ( 60 ), a first rotating subassembly ( 52 ), and a second rotating subassembly ( 53 ). The lens module is configured for focusing a laser beam emitting from the laser source. The first rotating subassembly is connected to the lens module and configured for driving the lens module to rotate relative to the laser source. The second rotating subassembly is rotatably connected to the lens module. The sprayer is connected to the second rotating subassembly and driven to rotate relative to the laser source by the second rotating subassembly.

1. A laser cutting device comprising:
 a laser source; 
 a lens module configured for focusing a laser beam emitting from the laser source; 
 a first rotating subassembly connected to the lens module and configured for driving the lens module to rotate relative to the laser source, wherein the first rotating subassembly comprises a first stator, a first rotor, and a first field coil, the first rotor is fixedly sleeved on the lens module and made of conductive materials, the first stator is sleeved on the first rotor, the first field coil is sleeved on the first stator, and the first rotor is driven to rotate when the first field coil is energized, such as to drive the lens module to rotate; 
 a second rotating subassembly rotatably connected to the lens module; and 
 a sprayer connected to the second rotating subassembly and being driven to rotate relative to the laser source by the second rotating subassembly. 
 
     
     
       2. The laser cutting device as claimed in  claim 1 , wherein the second rotating subassembly comprises a second stator and a second rotor, the second stator is sleeved on the second rotor, a second field coil is sleeved on the second stator, and the second rotor is driven to rotate when the second field coil is energized, such as to drive the sprayer to rotate. 
     
     
       3. The laser cutting device as claimed in  claim 2 , wherein the second rotor is a hollow cylinder and rotatably sleeves on the lens module. 
     
     
       4. The laser cutting device as claimed in  claim 2 , wherein the second rotating subassembly further comprises a lantern ring, the lantern ring is rotatably sleeved on the lens module and fixedly connected to the second rotor, and the sprayer is fixed to the lantern ring. 
     
     
       5. The laser cutting device as claimed in  claim 4 , wherein the lantern ring defines two annular grooves in the outer cylindrical surface, the rotating subassembly further comprises two O-rings, and the O-rings are received in the annular grooves correspondingly. 
     
     
       6. The laser cutting device as claimed in  claim 5 , wherein the lantern ring further defines a receiving groove between the two annular grooves, and a channel therein connected to the receiving groove for conveying coolant to the sprayer. 
     
     
       7. The laser cutting device as claimed in  claim 6 , wherein the second stator defines a through hole connected with the receiving groove of the lantern ring. 
     
     
       8. The laser cutting device as claimed in  claim 6 , wherein the sprayer comprises a nozzle, the sprayer defines a passage connecting the channel of the lantern ring with the nozzle correspondingly. 
     
     
       9. The laser cutting device as claimed in  claim 1 , wherein the lens module comprises a lens tube and a focusing lens module, and the focusing lens module is received in the lens tube. 
     
     
       10. The laser cutting device as claimed in  claim 1 , further comprising a connecting plate sleeved on the lens module. 
     
     
       11. A laser cutting device comprising:
 a laser source; 
 a lens module configured for focusing a laser beam emitting from the laser source on nonmetallic materials, such as to heat nonmetallic materials; 
 a sprayer configured for spraying coolant on nonmetallic materials, such as to cool nonmetallic materials; and 
 a rotating subassembly connected to the sprayer and driving the sprayer to rotate, thus making the coolant substantially along a predetermined curved cutting path of nonmetallic materials, wherein the rotating subassembly comprises a stator, a rotor, and a field coil, the stator is sleeved on the rotor, the rotor is a hollow cylinder and rotatably sleeves on the lens module, the field coil is sleeved on the stator, the rotor is driven to rotate when the field coil is energized, such as to drive the sprayer to rotate. 
 
     
     
       12. The laser cutting device as claimed in  claim 11 , wherein the rotating subassembly further comprises a lantern ring, the lantern ring is rotatably sleeved on the lens module and fixedly connected to the rotor, the sprayer is fixed to the lantern ring. 
     
     
       13. The laser cutting device as claimed in  claim 12 , wherein the lantern ring defines two annular grooves in the cylindrical surface, the rotating subassembly further comprises two O-rings, and the O-rings are received in the annular grooves correspondingly. 
     
     
       14. The laser cutting device as claimed in  claim 13 , wherein the lantern ring further defines a receiving groove between two annular grooves, and a channel therein for connected to the receiving groove for conveying coolant to the sprayer. 
     
     
       15. The laser cutting device as claimed in  claim 14 , wherein the stator defines a through hole connecting with the receiving groove of the lantern ring. 
     
     
       16. The laser cutting device as claimed in  claim 11 , wherein the lens module comprises a lens tube, and a focusing lens module is received in the lens tube. 
     
     
       17. The laser cutting device as claimed in  claim 11 , further comprising a connecting plate, the connecting plate being sleeved on the lens module.